Has anyone got this game working through wine/cadega? I know the port is coming but I installed it on my friends computer and god damn that game kicks ass. I wanna' play the game now but I don't wanna' install Windows again as I hate the damn OS. The performance is terrible compared to linux.

If you get Cedega from CVS and apply a patch from here (look around in the news archives):
http://linux-gamers.net
It's possible.

I also have wine installed. Will installing winex conflict?

No, Wine and WineX and Cedega are all separate.

The newest version of cedega (came out yesterday) supports Doom 3. Cedega will not support Doom3 once the linux binaries are released.

Whala! Doom3 on Linux! It is now installing. Let's see if it'll run after it's finished. I'll be stuck to this thing for a while if it does.

Well looks like it's not running. Getting this error:

err:module:BUILTIN32_dlopen failed to load .so lib for builtin glu32.dll: /home/frostbot/.WineCVS/installs/cvscedega/lib/libglu32.so: undefined symbol: dllname
err:module:PE_fixup_imports Module (file) GLU32.dll (which is needed by D:\games\doom3\Doom3.exe) not found

If anyone can help me with this that would be great!

I managed to actually run the game with "wine" rather than "cvscedega". Problem is there's no sound and the sound is very important in this game. If you can help with either way to run it let me know please.